Disk water-meter



2 Sheets-Sheet 1.

(No Model.)

J. A. TILDEN. DISK WATER METER No. 489,208. Patented Jan. 3, 1893.

Fig. 1

WiMe/esses: Ira/wank)?" 2 Sheets-Sheet 2.

(No Model.)

J, A. TILDEN. DISK WATER METER.

Patented Jan. 3, 1893.

HHIHU l n lzfne ss e s UNTTED STATES PATENT QEETCE.

JAMES A. TILDEN, OF HYDE PARK, MASSACHUSETTS, ASSIGNOR TO THE HERSEYMANUFACTURING COMPANY, OF PORTLAND, MAINE.

DISK WATER-METER.

SPECIFICATION forming part of Letters Patent No. 489,208, dated January3, 1893.

Application filed July 5, 1892. Serial No. 438,892. (No model.)

To all whom it may concern:

Be it known that I, JAMEs A. TILDEN, a citizen of the United States,residing at Hyde Park, in the county of Norfolk, State of Massachusetts,have invented a new and useful Improvement in Water-Meters, of which thefollowing is a full, clear, and exact description, referencelbeing hadto the accompanying drawings, forming a part of this specification, inexplaining its nature.

The invention relates to the class of meters known as disk meters, andcomprises various details of construction and organization, whereby ameter of great efficiency, accuracy and durability is obtained, while atthe same time the mechanical parts are simplified in arrangement andreduced in cost.

In the drawings: Figure 1 is a view in vertical central section of themeter: Fig. 2 is a view in vertical section and elevation of a portionof the inner case, illustrating in part the construction of the case andthe arrangement of the ports: Fig. 3 is a view in elevation of thecomplete inner case removed from the outer case: Fig. 4 is a view inplan thereof.

The outer case A, is made in two parts 0. a, the part a forming thebase, and the part a the cap which is secured to the base by bolts. Thetwo parts together form without the inner case a large chamber B (seeFig. 1)

which is divided into two parts by the inner case 0, and its laterallyextending flange c. This flange furnishes the means by which the innercase is held in the chamber B, being made sufficiently large to dropinto the recess a on the inner side of the top of the base a, the flangeresting upon the shoulder formed by the recess and the cap a lappingupon the upper surface of the flange. This construction provides for theeasy removal of the inner case from the outer case, as it is simplynecessary to unbolt and lift the cap a from the base a to expose theinner case and permit it to be taken out. The outer caseA, has

the water passage 0, in the one side connecting with the upper part b ofthe chamber B, and on the opposite side the passage a connecting withthe lower part b of the chanr ber B. Either of these passages may beused for the inlet or outlet respectively. In Fig.

l I have represented the passage a as the inlet and the passage a as theoutlet. The cap a is made of sufficient height to provide space for asection of the reducing train of the registering mechanism.

The inner case 0 contains the disk chamber c, which preferably has theflat lower surface or bottom 0 the spherically curved side wall 0 andthe downwardly extending conical top 0 The spherically curved side wallis a true section of about two thirds of a hemisphere, the greaterdiameter being at the base and the smaller at the top. The case isconstructed of three parts, namely, first, the base plate 0 which has acentral downwardly rounded depression 0 forming a disk bearin g, andthehorizontalextension o on each side ending in a depressed flange 0second, the side wall 0 which has the flange c, the enlargement 0 uponthe lower side of the flange, and the enlargement 0 upon the upper sideof the flange, see Fig. 3, providing respectively a portion of the inletport D, and of the outlet port D, the inlet port including the largeopening cl in the wall 0 below the flange c, as well as the portion ofthe opening afiorded by the enlargement c, the entrance to which extendsthrough the flange, and is at a right angle to the entrance d; theoutlet port including the large opening d through the wall 0 and theincreased opening through the flange 0, provided by the enlargement 0see Figs. 3 and 4, and the outer wall 0 which has an outwardly extendingfoot or flange 0 about its lower edge to fit into the depression in thelower plate formed by the depressed flange 0 The upper edge 0 issquared. It will be understood of course that this wall is hollow andhas a cylindrical opening below and above the lower opening having thelargest diameter. It will be also understood that the lower opening isclosed by the bottom plate 0 The upper opening is closed by the topplate E. This upper plate forms the third part of the case and has thecylindrical flange e, which rests upon the upper surface of the wall a",the short cylindrical section e, which fits into the cavity immediatelybelow upper cylindrical opening, and forms a joint with the squaredupper edge of the wall 0 and the downwardly-extending conical section ethe inner surface of which forms the top of the disk chamber, and whichends about the upwardly curved central section e the center of which isremoved to form an opening 6 The section 6 of the upper plate and thedepression c of the lowerplate form spherical bearings for the ball fofthe disk F. The disk comprises the ball f and the thin conical plate orsection f, extending conically from the ball. The disk chamber 0 uponthe port side is divided by the partition or abutment g, which extendsfrom the wall 0 between the ports to the ball of the disk: and the diskplate' f 'is' provided with a radial recess through which the partitionextends. At the lower end of the lower bearing 0 there is formed in thebottom plate the inclined circular track h (see Fig. 1) into whichextends the axis h of the disk ball, the opposite end of the axisextending through the hole 6 in the upper plate E, and bearing against ashort lever mon the lower end of the spindle m, connected with thereducing mechanism of the registering train. Preferably the diameter ofthat part of the axis h in the track h is somewhat less than the widthof the track, so that the axis may not cramp as it traverses thegrooves. The object of this axis and track is to maintain the disk inmechanically controlled relation to the case and to the ports and wallof the case, so that it is compelled to travel or move in a given track,which is the track in which it should move to properly and accuratelyco-act with the ports and wall in its measuring function. The disk thusmechanically held, guided and controlled'in the disk chamber cannot bedislodged by a shock, and reduces friction and wear to a minimum.

There may be extended across the lower section of the chamber B, theperforated diaphragm n, if desired, to intercept the passage of foreignmatter.

In operation the water enters the section b of the chamber, passes intothe inlet D, traverses the disk chamber 0, actuating the disk andleaving it through the outlet port D, entering section b of the chamberB, from which it flows through the passage a It will be seen that thedisk case is contained or held in a large chamber, and that it and itslaterally extending flange effect a division of the chamber into twoparts, one of which receives water from the inlet and connects with theinlet port of the disk chamber, and the other of which connects with theescape passage and receives water from the disk chamber: It will also beobserved that the construction of the two cases is such that the innercase is readily placed in the outer case, securely held and easilyremoved. It will further be seen that the construction of the diskchamber or case is such that each of the three parts can be accuratelyshaped, made and duplicated by ordinary machine tools and methods, andthat they and the disk are so constructed and put together that the diskcan be easily placed and removed from the case. It will also be observedthat the bearings which wear, being in the upper and lower plates, canbe easily renewed by simply substituting new upper and lower plates forthe old ones, while the same side wall and disk can be used almostindefinitely.

I prefer to make the disk of hard rubber. The water pressure against theupper surface of the disk wall acting through the opening 6 in the upperplate may be balanced by a water pressure in the space 0 below the lowerbearing by means of water introduced to said space through a hole o'inthe axisflh, con-,

necting the water chamber Z) with said space 0.

It will be understood, of course, that the lower plate of the inner diskcase and the upper plate of said case are secured to the intermediateflanged wall by screws 0 which extend through holes in said plate intothe wall and furnish means by which the two plates are made easilydetachable from the wall 0 Having thus fully described my invention Iclaim and desire to secure by Letters Patent of the United States:

1. A disk meter having a case forming the measuring chamber and ameasuring disk contained therein, the said case having the flange c, theenlargement 0 below the flange upon one side of the partition g, whichopens through the flange and connects with and forms a part of the portopening 01 and the enlargement 0 above the flange c, which opensdownward through the flange and connects with and forms a part of theport at and is arranged upon the other side of the abutmentor partitiongas and for the purposes described.

2. The combination in a disk meter of the outer case A, comprising thebase a and the cap o its passages a a, and the inner disk case having ayflange c which included with the case separates the cavity of the outercase into two distinct parts or sections, one of which parts or sectionsis an inlet chamber, and the other an outlet chamber; an inlet port inthe inner case connecting the inlet chamber of the outer case with themeasuring cavity of the inner or disk case, and the outlet port in saidinner or disk case connecting its measuring cavity with the outletchamber of said outer case, as and for the purposes described.

3. The combination in a disk meter of the outer case A, comprising thebase a the cap a forming a large open chamber B, and the passage a a andthe removable inner disk case having the flange c, the edge of which isconfined between the cap a and the base a, and which, with the innercase, divides said chamber 13 into two sections, whereby the inner caseis made easily removable from the outer case, as and for the purposesdescribed.

4. The combination in a disk meter of the disk case formed of thedetachable lower flat plate 0 having the ball bearing a, the separatespherical curved wall 0", having an opening at each end, the loweropening of which IIO is closed by the plate 0 and the detachable I upperplate 0 closing the upper opening said plates being formed with adownward conically shaped section having a hole e and the ball bearing 6as and for the purposes described.

5. The combination of the disk case made of three detachable plates orpieces a, c and c all shaped substantially as indicated and unitedtogether to form a disk chamber of the shape specified, and having portsof the character described with the conical disk contained in saidchamber, having a ball f and the conical disk plate f extending frornthe ball f slotted upon one side, and the abutment or partition 9 whichextends through said slot, and divides one side of the disk chamber fromthe ball to the wall, substantially as described.

6. The combination of the disk chamber having the opening a at its topand the space 0 at its bottom, the ball bearing, and the disk having aball to fit the bearing, and a hole through the ball connecting thewater chamber above it with the space 0 below it, as and for thepurposes described.

7. In a disk meter the inner case, the lower plate 0 of which has thedepressed support 0 for receiving the foot of the side wall, the saidwall having a flange, inlet and outlet ports, and squared at the uppercorner as specified, and the upper plate having an outwardly extendingledge to rest upon the squared upper surface of the side wall, and adownwardly extending conical section, which intersects at its upperouter edge the curved surface of the inner wall, the lower and upperplates being secured to the intermediate flanged wall by screws, as andfor the purposes described.

JAMES A. TILDEN.

Witnesses:

F. F. RAYMOND, 2d, J. M. DOLAN.

